For example, family.
With the loss of an uncle recently (actually a cousin once removed, but more like an uncle than a cousin), it gave me cause to consider that our time here is finite. At the risk of getting too focused on our own mortality, it is important to remember that our world won't stay the same forever. As fast-paced as that world around us operates, it's easy to lose sight of that fact. Don't squander time with family. Enjoy that time like it won't last forever - because it won't.
This is true for work as well. Now, I'd be the first to admit that at this point of my career (hey, after all, I'm writing a blog about counting down to retirement!), I am not going to frantically try to climb the corporate ladder. But what I will admit is a realization that although in previous posts, I've landed my dream job, this is a great reminder that I can work smarter (and maybe just a bit harder!)
The next position may or may not ever materialize. However, the passing of a dear family member has reminded me that time, too, passes. I intend to use it wisely - with family and to capture any possible professional opportunities that may exist for me.